// Copyright (c) 2021 Terminus, Inc.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package filters

import (
	"github.com/erda-project/erda/internal/core/messenger/eventbox/dispatcher/errors"
	"github.com/erda-project/erda/internal/core/messenger/eventbox/types"
)

type UnifyLabelsFilter struct{}

func NewUnifyLabelsFilter() Filter {
	return &UnifyLabelsFilter{}
}

func (*UnifyLabelsFilter) Name() string {
	return "UnifyLabelsFilter"
}

func (*UnifyLabelsFilter) Filter(m *types.Message) *errors.DispatchError {
	labels := m.Labels
	normalizedLabels := map[types.LabelKey]interface{}{}
	for k, v := range labels {
		normalizedKey := k.NormalizeLabelKey()
		normalizedLabels[normalizedKey] = v
	}
	m.Labels = normalizedLabels
	return nil
}
